Diagnose

Run comprehensive diagnostics on a specific element or the entire page.

If selector provided ($ARGUMENTS):

1. Check element exists:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-eval.js 'document.querySelector("$ARGUMENTS") !== null'
   

2. Get element details:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-eval.js '(() => {
     const el = document.querySelector("$ARGUMENTS");
     if (!el) return "Element not found";
     const s = getComputedStyle(el);
     const r = el.getBoundingClientRect();
     return {
       tag: el.tagName,
       id: el.id,
       classes: [...el.classList],
       dimensions: { width: r.width, height: r.height },
       position: { top: r.top, left: r.left },
       styles: {
         display: s.display,
         visibility: s.visibility,
         opacity: s.opacity,
         position: s.position,
         zIndex: s.zIndex,
         overflow: s.overflow,
         flex: s.display === "flex" ? { direction: s.flexDirection, justify: s.justifyContent, align: s.alignItems } : null,
         grid: s.display === "grid" ? { columns: s.gridTemplateColumns, rows: s.gridTemplateRows } : null
       },
       text: el.textContent?.slice(0, 100)
     };
   })()'
   

3. Screenshot element:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-screenshot.js --selector="$ARGUMENTS"
   

If no selector (full page diagnosis):

1. Take screenshot:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-screenshot.js
   

2. Check for JavaScript errors:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-console.js --errors
   

3. Check network failures:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-network.js --failures
   

4. Get page summary:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-dom.js
   

5. Check accessibility basics:

   node ~/.claude/plugins/**/website-debug/skills/website-debug/scripts/browser-eval.js '(() => {
     const issues = [];
     // Images without alt
     const imgs = document.querySelectorAll("img:not([alt])");
     if (imgs.length) issues.push(`${imgs.length} images missing alt text`);
     // Buttons/links without text
     const emptyBtns = [...document.querySelectorAll("button, a")].filter(el => !el.textContent.trim() && !el.getAttribute("aria-label"));
     if (emptyBtns.length) issues.push(`${emptyBtns.length} buttons/links without accessible text`);
     // Form inputs without labels
     const inputs = document.querySelectorAll("input:not([type=hidden]):not([type=submit])");
     const unlabeled = [...inputs].filter(i => !i.getAttribute("aria-label") && !document.querySelector(`label[for="${i.id}"]`));
     if (unlabeled.length) issues.push(`${unlabeled.length} form inputs without labels`);
     return issues.length ? issues : "No basic accessibility issues found";
   })()'
   

Report Format

Provide a structured diagnosis:

Visual Analysis

• What the screenshot shows
• Any obvious layout issues

JavaScript Errors

• List errors found (or confirm none)
• Suggest fixes for each

Network Issues

• Failed requests (or confirm none)
• Suggest causes

Accessibility

• Issues found
• Recommendations

Recommendations

• Priority fixes
• Suggestions for improvement